The article says it can just use the Pi’s HDMI output as a screen, so you could ...

Cyberdog on Jan 3, 2024 | parent | context | favorite | on: Show HN: FrameOS – operating system for single fun...

The article says it can just use the Pi’s HDMI output as a screen, so you could presumably drive that at 60FPS if you want. I imagine the HDMI output is useful for debugging even if you ultimately intend to use an e-ink display.